Nut-lock.



Y Patented Apr. I0, |900. F. BAKER. NUT LOCK. (Applhicatio'n led Oct,19, 1899.)

(No Model.)

hole is tapering.

NiTEn STATES PATENT GEEICE.

FREDERICK BAKER, OF CALFIELD, VICTORIA.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No, 647,357, dated April10, 1900. Application led October 12, 1899. Serial No. 7331425. (Nomodel.)

To all whom, t may con/cern:

Be it known that I, FREDERICK BAKER, builder, a subject of the Queen ofGreat Britain, residing at Maylands, Kambrook road, Caulfield, nearMelbourne, in the British Colony of Victoria, have 4invented an ImprovedNut-Lock Principally Adapted for Railway Purposes, (for which I appliedfor a patent in Victoria on the 6th day of June, 1899, and numberedl6,247,) of which the following is a specification.

This improved nut-lock has been devised mainly for use on railways forsecuring the ends of the rails and the fish-plates together, although itis equally applicable for many other purposes where nuts are required tobe secured on bolts in such a manner that they will not be liable towork loose.

A further object of this invention is to provide a nut-lock which can bemore readily .and quickly itted and secured upon a bolt than is possiblewith screw-threaded nuts and bolts, and at the same time my inventionenables a nut to be removed and again replaced Without damaging eitherthe nut or the bolt.

In order that my invention may be clearly understood, I will describe itby reference to the accompanying drawings, in which- Figure 1 is asectional side elevation of a bolt adapted to be fitted with a lock-nutin accordance with this invention. Fig. 2 is a side elevation of saidnut. Fig. 3 isa similar view of the locking piece or key used forexpanding the lower end of the bolt, as hereinafter described. Fig. 4 isa vertical central Asection of the bolt and nut, While Fig.' 5 is ahorizontal section on line 5 5, Fig.V 4; and Figs. 6 to 10 are views ofvarious modifications.

Bolts A to .be fitted with lock-uuts in accordance with this inventionare constructed, as illustrated in Fig. l, with a head B at one end inthe ordinary manner; but the other end instead of being screw threadedis split longitudinally. A hole C is formed from end to end of the holt,and the lower end of this It is adapted to receive a pin or key D,whereby the lower end of the bolt can be expanded.

The nut E is formed with a slightly-taper- 'ing hole F, the smallestdiameter of Which is bolt being split into four sections, as in Fig.

5, it might be split, as illustrated in Fig. 6, in one direction only.

The upper end of the pin or key D is formed with a head or shoulder G tofacilitate its withdrawal from the bolt, while its lower end may beprovided with means for securing it in position within the bolt. Thesemeans might consist of ratchet-teeth I-I, form ed upon the piu or key,as illustrated in Fig. 9, to engage with the edge of the bolt, or a holeor i holes might be formed through the projecting end of said pin orkey, as illustrated in Fig. 4, for the reception of a split pin I.Another means for attaining the same objectconsists in constructing theend of the key or pin in such a way that it can be turned or bent overafter it has been passed through the bolt, as illustrated in Fig. 8.This said bolt may be split either partially or from end to end and canbe constructed so that it will expand all around or only on oppositesides. It can he made round, oblong, square, or any other preferredshape in cross-section, and the pin or key D used for expanding itslower end may be similarly shaped, if preferred.

The nut E can be of any preferred shape for instance, it might be thefish-plate itself, as illustratedV in Fig. l0, in which case the plateforming the nut would be formed with a number of tapering orpartly-tapering and partly-parallel holes,accordin g to the number ofbolts required to be used.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is.

l. A nut-lock comprising a hollow bolt having a longitudinallysplit endopposite its head, the said end having diverging inner and outer Walls,a nut having a tapering opening Sus ICO

therethrough, and a key entering said hollow bolt at its headed end forspreadingthe split end of said nut in said opening.

2. A nut-look comprising a bolt having a central bore therein and havingthe end thereof opposite its head longitudinally split, the Walls ofsaid bore converging adjacent to said split end, a nut having a taperingopening therethrough, and a key adapted to be inserted into the bore ofsaid bolt atits'headed end to engage the converging Walls of said boreand spread the split end of said bolt in said opening.

3. A nut-lock comprising a bolt having a central bore therein and havingthe end thereof opposite its head longitudinally split, the Walls ofsaid bore converging adjacent to said split end, a nut having a taperingopening therethrough, a key having a tapering end adapted to be insertedinto the bore in said bolt to engage thetapering Walls thereof forspreading the split end of said bolt in said opening, and means forpreventing the acei dental removal of said key.

FREDERICK BAKER. Witnesses:

EDWARD WATERS, y EDWARD WATERS, Jr.

